According to @FuSheng_0306, a Google Research paper shows that repeating the same instruction twice can significantly improve large language model outputs on long text information extraction, source: @FuSheng_0306 citing Google Research. The cited result indicates that simply duplicating the prompt raised accuracy from 21.33% to 97.33% on a long-context extraction task, source: @FuSheng_0306 citing Google Research. This highlights a lightweight prompt engineering tactic that can immediately boost reliability for LLM-driven information extraction and summarization pipelines without model changes, source: @FuSheng_0306 citing Google Research. Practical takeaway: when processing long documents, restate the requirement twice to enhance precision and consistency, source: @FuSheng_0306 citing Google Research.